# example taken from https://nodejs.org/api/cluster.html
> cat test.js
const cluster = require('cluster');
const http = require('http');
const numCPUs = require('os').cpus().length;

if (cluster.isMaster) {
  console.log(`Master ${process.pid} is running`);

  // Fork workers.
  for (let i = 0; i < numCPUs; i++) {
    cluster.fork();
  }

  cluster.on('exit', (worker, code, signal) => {
    console.log(`worker ${worker.process.pid} died`);
  });
} else {
  // Workers can share any TCP connection
  // In this case it is an HTTP server
  http.createServer((req, res) => {
    res.writeHead(200);
    res.end('hello world\n');
  }).listen(8000);

  console.log(`Worker ${process.pid} started`);
}

> node test.js
Master 5133 is running
Worker 5141 started
Worker 5153 started
Worker 5160 started
Worker 5161 started
Worker 5147 started
Worker 5140 started

> nexe -t node-12.0.0-linux-x64 -o test test.js
> ./test
Master 5183 is running